Some may argue that stoners are safer drivers simply because they don't want to get caught with their stash....which may be true to some extent.
But I can testify with my own experience driving while high....Senior year of high school, got out early, went behind the football field into the woods and got higher than a kite.
I was the driver, and we were all going to this awesome deli for subs. My senses were peaked, the sound of the radio was like magic going through my ears...relaxed, but very aware of everything around me. And then came the pickup truck out of nowhere....I noticed it because of intuition...I didn't see it in my rear view mirror. If I didn't swerve left he would have slammed into the rear of my car.
A heightened sense of whatever made me get out of the way, and my friends knew exactly what happened. They saw the truck and said wtf?!
I was driving stoned, but I was also very conscious of the fact that I had 3 other people in my driving hands. If I wasn't stoned, my friends and I would be six foot under.
Never be afraid to ask simple questions.